Home / 30,911.23-42,657.38-16,764.04

Finding the Fourth Proportional to 30,911.23, 42,657.38 and 16,764.04

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Solution

The fourth proportional to 30,911.23, 42,657.38 and 16,764.04 is: 23,134.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,911.23 : 42,657.38 = 16,764.04 : x
  2. Step 2: Convert to fraction form
    30,911.23/42,657.38 = 16,764.04/x
  3. Step 3: Cross multiply
    30,911.23x = 42,657.38 × 16,764.04
  4. Step 4: Simplify right side
    30,911.23x = 715,109,811.33
  5. Step 5: Solve for x
    x = 715,109,811.33/30,911.23
  6. Step 6: Final answer
    x = 23,134.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.